Home / 15,587.42-21,533.40-13,487.90

Finding the Fourth Proportional to 15,587.42, 21,533.40 and 13,487.90

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Solution

The fourth proportional to 15,587.42, 21,533.40 and 13,487.90 is: 18,633.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.42 : 21,533.40 = 13,487.90 : x
  2. Step 2: Convert to fraction form
    15,587.42/21,533.40 = 13,487.90/x
  3. Step 3: Cross multiply
    15,587.42x = 21,533.40 × 13,487.90
  4. Step 4: Simplify right side
    15,587.42x = 290,440,238.19
  5. Step 5: Solve for x
    x = 290,440,238.19/15,587.42
  6. Step 6: Final answer
    x = 18,633.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.